[Midnightbsd-cvs] src [10660] trunk/lib/libnandfs: add libnandfs
laffer1 at midnightbsd.org
laffer1 at midnightbsd.org
Sat Jun 9 15:27:57 EDT 2018
Revision: 10660
http://svnweb.midnightbsd.org/src/?rev=10660
Author: laffer1
Date: 2018-06-09 15:27:56 -0400 (Sat, 09 Jun 2018)
Log Message:
-----------
add libnandfs
Added Paths:
-----------
trunk/lib/libnandfs/
trunk/lib/libnandfs/Makefile
trunk/lib/libnandfs/libnandfs.h
trunk/lib/libnandfs/nandfs.c
Added: trunk/lib/libnandfs/Makefile
===================================================================
--- trunk/lib/libnandfs/Makefile (rev 0)
+++ trunk/lib/libnandfs/Makefile 2018-06-09 19:27:56 UTC (rev 10660)
@@ -0,0 +1,10 @@
+# $MidnightBSD$
+# $FreeBSD: stable/10/lib/libnandfs/Makefile 235537 2012-05-17 10:11:18Z gber $
+
+LIB= nandfs
+SRCS+= nandfs.c
+INCS= libnandfs.h
+
+CFLAGS += -I${.CURDIR}
+
+.include <bsd.lib.mk>
Property changes on: trunk/lib/libnandfs/Makefile
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Added: svn:keywords
## -0,0 +1 ##
+MidnightBSD=%H
\ No newline at end of property
Added: svn:mime-type
## -0,0 +1 ##
+text/plain
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Added: trunk/lib/libnandfs/libnandfs.h
===================================================================
--- trunk/lib/libnandfs/libnandfs.h (rev 0)
+++ trunk/lib/libnandfs/libnandfs.h 2018-06-09 19:27:56 UTC (rev 10660)
@@ -0,0 +1,66 @@
+/* $MidnightBSD$ */
+/*-
+ * Copyright (c) 2010-2012 Semihalf.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD: stable/10/lib/libnandfs/libnandfs.h 235537 2012-05-17 10:11:18Z gber $
+ */
+
+#ifndef _LIBNANDFS_NANDFS_H
+#define _LIBNANDFS_NANDFS_H
+
+struct nandfs {
+ struct nandfs_fsdata n_fsdata;
+ struct nandfs_super_block n_sb;
+ char n_ioc[MNAMELEN];
+ char n_dev[MNAMELEN];
+ int n_iocfd;
+ int n_devfd;
+ int n_flags;
+ char n_errmsg[120];
+};
+
+int nandfs_iserror(struct nandfs *);
+const char *nandfs_errmsg(struct nandfs *);
+
+void nandfs_init(struct nandfs *, const char *);
+void nandfs_destroy(struct nandfs *);
+
+const char *nandfs_dev(struct nandfs *);
+
+int nandfs_open(struct nandfs *);
+void nandfs_close(struct nandfs *);
+
+int nandfs_get_cpstat(struct nandfs *, struct nandfs_cpstat *);
+
+ssize_t nandfs_get_cp(struct nandfs *, uint64_t,
+ struct nandfs_cpinfo *, size_t);
+
+ssize_t nandfs_get_snap(struct nandfs *, uint64_t,
+ struct nandfs_cpinfo *, size_t);
+
+int nandfs_make_snap(struct nandfs *, uint64_t *);
+int nandfs_delete_snap(struct nandfs *, uint64_t);
+
+#endif /* _LIBNANDFS_NANDFS_H */
Property changes on: trunk/lib/libnandfs/libnandfs.h
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Added: svn:keywords
## -0,0 +1 ##
+MidnightBSD=%H
\ No newline at end of property
Added: svn:mime-type
## -0,0 +1 ##
+text/plain
\ No newline at end of property
Added: trunk/lib/libnandfs/nandfs.c
===================================================================
--- trunk/lib/libnandfs/nandfs.c (rev 0)
+++ trunk/lib/libnandfs/nandfs.c 2018-06-09 19:27:56 UTC (rev 10660)
@@ -0,0 +1,248 @@
+/* $MidnightBSD$ */
+/*-
+ * Copyright (c) 2010-2012 Semihalf.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: stable/10/lib/libnandfs/nandfs.c 235537 2012-05-17 10:11:18Z gber $");
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <sys/stdint.h>
+#include <sys/ucred.h>
+#include <sys/disk.h>
+#include <sys/mount.h>
+
+#include <fs/nandfs/nandfs_fs.h>
+#include <libnandfs.h>
+
+#define NANDFS_IS_VALID 0x1
+#define NANDFS_IS_OPENED 0x2
+#define NANDFS_IS_OPENED_DEV 0x4
+#define NANDFS_IS_ERROR 0x8
+
+#define DEBUG
+#undef DEBUG
+#ifdef DEBUG
+#define NANDFS_DEBUG(fmt, args...) do { \
+ printf("libnandfs:" fmt "\n", ##args); } while (0)
+#else
+#define NANDFS_DEBUG(fmt, args...)
+#endif
+
+#define NANDFS_ASSERT_VALID(fs) assert((fs)->n_flags & NANDFS_IS_VALID)
+#define NANDFS_ASSERT_VALID_DEV(fs) \
+ assert(((fs)->n_flags & (NANDFS_IS_VALID | NANDFS_IS_OPENED_DEV)) == \
+ (NANDFS_IS_VALID | NANDFS_IS_OPENED_DEV))
+
+int
+nandfs_iserror(struct nandfs *fs)
+{
+
+ NANDFS_ASSERT_VALID(fs);
+
+ return (fs->n_flags & NANDFS_IS_ERROR);
+}
+
+const char *
+nandfs_errmsg(struct nandfs *fs)
+{
+
+ NANDFS_ASSERT_VALID(fs);
+
+ assert(nandfs_iserror(fs));
+ assert(fs->n_errmsg);
+ return (fs->n_errmsg);
+}
+
+static void
+nandfs_seterr(struct nandfs *fs, const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vsnprintf(fs->n_errmsg, sizeof(fs->n_errmsg), fmt, ap);
+ va_end(ap);
+ fs->n_flags |= NANDFS_IS_ERROR;
+}
+
+const char *
+nandfs_dev(struct nandfs *fs)
+{
+
+ NANDFS_ASSERT_VALID(fs);
+ return (fs->n_dev);
+}
+
+void
+nandfs_init(struct nandfs *fs, const char *dir)
+{
+
+ snprintf(fs->n_ioc, sizeof(fs->n_ioc), "%s/%s", dir, ".");
+ fs->n_iocfd = -1;
+ fs->n_flags = NANDFS_IS_VALID;
+}
+
+void
+nandfs_destroy(struct nandfs *fs)
+{
+
+ assert(fs->n_iocfd == -1);
+ fs->n_flags &=
+ ~(NANDFS_IS_ERROR | NANDFS_IS_VALID);
+ assert(fs->n_flags == 0);
+}
+
+int
+nandfs_open(struct nandfs *fs)
+{
+ struct nandfs_fsinfo fsinfo;
+
+ fs->n_flags |= NANDFS_IS_OPENED;
+
+ fs->n_iocfd = open(fs->n_ioc, O_RDONLY, S_IRUSR | S_IWUSR | S_IRGRP |
+ S_IWGRP | S_IROTH | S_IWOTH);
+ if (fs->n_iocfd == -1) {
+ nandfs_seterr(fs, "couldn't open %s: %s", fs->n_ioc,
+ strerror(errno));
+ return (-1);
+ }
+
+ if (ioctl(fs->n_iocfd, NANDFS_IOCTL_GET_FSINFO, &fsinfo) == -1) {
+ nandfs_seterr(fs, "couldn't fetch fsinfo: %s",
+ strerror(errno));
+ return (-1);
+ }
+
+ memcpy(&fs->n_fsdata, &fsinfo.fs_fsdata, sizeof(fs->n_fsdata));
+ memcpy(&fs->n_sb, &fsinfo.fs_super, sizeof(fs->n_sb));
+ snprintf(fs->n_dev, sizeof(fs->n_dev), "%s", fsinfo.fs_dev);
+
+ return (0);
+}
+
+void
+nandfs_close(struct nandfs *fs)
+{
+
+ NANDFS_ASSERT_VALID(fs);
+ assert(fs->n_flags & NANDFS_IS_OPENED);
+
+ close(fs->n_iocfd);
+ fs->n_iocfd = -1;
+ fs->n_flags &= ~NANDFS_IS_OPENED;
+}
+
+int
+nandfs_get_cpstat(struct nandfs *fs, struct nandfs_cpstat *cpstat)
+{
+
+ NANDFS_ASSERT_VALID(fs);
+
+ if (ioctl(fs->n_iocfd, NANDFS_IOCTL_GET_CPSTAT, cpstat) == -1) {
+ nandfs_seterr(fs, "ioctl NANDFS_IOCTL_GET_CPSTAT: %s",
+ strerror(errno));
+ return (-1);
+ }
+
+ return (0);
+}
+
+static ssize_t
+nandfs_get_cpinfo(struct nandfs *fs, uint64_t cno, int mode,
+ struct nandfs_cpinfo *cpinfo, size_t nci)
+{
+ struct nandfs_argv args;
+
+ NANDFS_ASSERT_VALID(fs);
+
+ args.nv_base = (u_long)cpinfo;
+ args.nv_nmembs = nci;
+ args.nv_index = cno;
+ args.nv_flags = mode;
+
+ if (ioctl(fs->n_iocfd, NANDFS_IOCTL_GET_CPINFO, &args) == -1) {
+ nandfs_seterr(fs, "ioctl NANDFS_IOCTL_GET_CPINFO: %s",
+ strerror(errno));
+ return (-1);
+ }
+
+ return (args.nv_nmembs);
+}
+
+ssize_t
+nandfs_get_cp(struct nandfs *fs, uint64_t cno, struct nandfs_cpinfo *cpinfo,
+ size_t nci)
+{
+
+ return (nandfs_get_cpinfo(fs, cno, NANDFS_CHECKPOINT, cpinfo, nci));
+}
+
+ssize_t
+nandfs_get_snap(struct nandfs *fs, uint64_t cno, struct nandfs_cpinfo *cpinfo,
+ size_t nci)
+{
+
+ return (nandfs_get_cpinfo(fs, cno, NANDFS_SNAPSHOT, cpinfo, nci));
+}
+
+int
+nandfs_make_snap(struct nandfs *fs, uint64_t *cno)
+{
+
+ NANDFS_ASSERT_VALID(fs);
+
+ if (ioctl(fs->n_iocfd, NANDFS_IOCTL_MAKE_SNAP, cno) == -1) {
+ nandfs_seterr(fs, "ioctl NANDFS_IOCTL_MAKE_SNAP: %s",
+ strerror(errno));
+ return (-1);
+ }
+
+ return (0);
+}
+
+int
+nandfs_delete_snap(struct nandfs *fs, uint64_t cno)
+{
+
+ NANDFS_ASSERT_VALID(fs);
+
+ if (ioctl(fs->n_iocfd, NANDFS_IOCTL_DELETE_SNAP, &cno) == -1) {
+ nandfs_seterr(fs, "ioctl NANDFS_IOCTL_DELETE_SNAP: %s",
+ strerror(errno));
+ return (-1);
+ }
+
+ return (0);
+}
Property changes on: trunk/lib/libnandfs/nandfs.c
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Added: svn:keywords
## -0,0 +1 ##
+MidnightBSD=%H
\ No newline at end of property
Added: svn:mime-type
## -0,0 +1 ##
+text/plain
\ No newline at end of property
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